Eastern Salmonfly vs Japanese Giant Stonefly
Side-by-side species comparison
| Attribute | Eastern Salmonfly | Japanese Giant Stonefly |
|---|---|---|
| Scientific Name | Pteronarcys biloba | Oyamia lugubris |
| Order | Plecoptera | Plecoptera |
| Family | Pteronarcyidae | Perlidae |
| Size | 30-40 mm | 25-35 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Detritivores | Predators |
| Regions | North America | Japan |
| Conservation | Least Concern | Least Concern |
Eastern Salmonfly
A large dark stonefly of Appalachian streams that emerges in late spring. Nymphs process leaf litter and are important detritivores.
Did You Know?
Nymphs retain functional gills throughout development, unlike many stoneflies that lose them with age.
Japanese Giant Stonefly
A large predatory stonefly found in mountainous streams of Japan. Nymphs have powerful mandibles for capturing prey in swift currents.
Did You Know?
It is an indicator of pristine water quality in Japanese mountain streams.